Yesterday, I showed my Algebra 1 classes how to graph parabolas on Mac's Grapher utility. It was so much fun! Dept. Chair at my school doesn't like to use technology all that much - even though she DOES have an ELMO (uses it like an overhead by the way - she doesn't believe me when I told her you could put the ELMO any where in the room and it'll still project onto the screen ::shrug::).
Going to let them play with Grapher next week to discover the patterns between the graph and equation of a parabola. Gotta make it really structured though. Every time I've used the mobile lab, some stupid kid always ends up doing something they aren't supposed to do.